Query: Corn planting

title: An MILP Model for Corn Planting and Harvest Scheduling Considering Storage Capacity and Growing Degree Units
abstract: Corn planting and harvest scheduling is an important problem due to having a significant impact on corn yield, balancing the capacities for harvest, transport, and storage operations. Different corn hybrids also have different planting window and poor planting and harvest schedules may cause erratic weekly harvest quantities and logistical and productivity issues. In the 2021 Syngenta Crop Challenge, Syngenta released several large datasets that recorded the historical daily growing degree units (GDU) of two sites and provided planting window, required GDUs, and harvest quantity of corn hybrids planted in these two sites. Then, participants of this challenge were asked to schedule planting and harvesting dates of corn hybrids under two storage capacity scenarios so that facilities are not over capacity in harvesting weeks and have consistent weekly harvest quantities. The two storage capacity scenarios include: (1) planting and harvest scheduling given the maximum storage capacity, and (2) planting and harvest scheduling without maximum storage capacity to determine the lowest possible capacity for each site. In this paper, we propose two mixed integer linear programming (MILP) models for solving this problem considering both the storage capacity and the uncertainty in GDUs. Our results indicate that our proposed models can provide optimal planting and harvest scheduling under different GDU possibilities which ensures consistent weekly harvest quantities that are below the maximum capacity.

title: DYNAMICS OF SOIL CARBON AND N, P, K NUTRIENTS ON CORN PLANTING PATTERN IN DRY LAND
abstract: A study was conducted during two planting seasons, namely planting season 1 (PS 1) 2017/2018 and (PS 2) 2018/2019, in Oelnasi Village, Central Kupang sub district, Kupang District, East Nusa Tenggara, Indonesia. This study aimed to evaluate the rotation pattern of maize with legumes ground covers towards the dynamics of soil carbon and nutrients N, P, K during the two growing seasons in a dryland farming system. The experiment was designed using a randomized block design with 3 (three) treatments replicated five times. The treatments evaluated were: crop rotation patterns consisting of: without rotation (farmer practice) and rotation pattern with Phaseolus lunatus; rotation pattern with Mucuna pruriens. Legume crops planted after harvesting the food crop and allowed to grow during the dry season. Approaching the rainy season, the biomass of the legume crop is returned to the land by immersing them it together with soil cultivation. Chemical fertilizers is given as an independent variables with a dose of 150 kg/ha of Urea; 100 kg/ha of SP36 and 100 kg/ha of KCL. The results showed that the rotation pattern of Mucuna pruriens significantly increased the soil organic C content by 50.56% and legume Phaseolus lunatus by 37.64% to PS 2. The rotation pattern of the legume covers covered crop also significantly increased the efficiency of agronomic nutrients (N, P, and K nutrients) and maize yields during the two growing seasons. On the other hand, the farmer pattern (without rotation) showed a decrease in soil carbon to PS 2 which of course affect the efficiency of nutrient absorption.

title: Development of Boyolali local peanut and composite corn planting patterns on rainfed rice fields
abstract: The location of the experiment was in the agro ecosystem rainfed ricefield, Nogosari, Boyolali from June 2017 to September 2017. The research consisted of a survey of technology components commonly applied at the farmer level as well as demonstration plots of technology components in accordance with the integrated crop management of palawija (composite corn and local peanuts) Farmers' understanding of the cultivation technology of peanuts and corn were very high. The yield of ubinan of Boyolali local peanut monoculture was still higher in farmer dosage (7.5 tons ha) compared to the recommendation from Center for Agricultural Technology Studies (CATS) of Central Java. The yield of local peanut intercropping composite corn was higher (6.1 ton ha) compared to the recommendation of CATS (5.0 ton ha) The yield of monoculture corn cropping is 3.6 tones ha at recommended dosage treatment and Provit A variety is 4 tons ha. Meanwhile, the yield of corn in intercropping was experiencing crop failure. Thus, the intercropping pattern of peanuts and composite corn can be accepted by farmers and can develop in this area if assisted by dissemination in the form of demonstration plots in rainfed agro ecosystems ricefield.

title: Implementation of K Means Algorithm for Clustering Corn Planting Feasibility Area in South Lampung Regency
abstract: South Lampung is a regency with the capital of Kalianda which has an area of 2,007.01 km2 that dominates the agricultural area. Based on the data of corn crops in the South Lampung Regency Agriculture Office through BPS (Central Bureau of Statistics) showing several areas with corn crops that vary in number. Therefore, a grouping of potential corn producing regions is required to know which areas produce large or small amounts of corn. The distribution of crops is usually done based on the name of the corn producing sub district. The K Means clustering method is one of the data mining methods that is non hierarchical clustering that groups data in the form of one or more clusters. Data that have the same characteristics are grouped in one cluster and the remaining is grouped into another cluster so that the data that is in one cluster has a small degree of variation. So the authors tried to apply the K Means clustering method from the corn crop data of the last 2 years to produce feasibility information from each sub district.

title: Effect of planting into a green winter cereal rye cover crop on growth and development, seedling disease and yield of corn.
abstract: Terminating winter cereal rye (Secale cereale L. cover crops (CCs) 10 or more days before planting corn is recommended to minimize seedling disease and potential yield loss. In Iowa, cold temperatures and frequent precipitation can prevent farmers from following that recommendation and sometimes forcing them to plant corn while the rye plants are still green, referred to as planting green (PG) A field trial was established to evaluate the effect of rye termination shortly before or after corn planting on growth, seedling root disease, and yield of corn. A rye CC was terminated 17 and 3 days before planting (DBP) and 6 and 12 days after planting (DAP) corn; corn planted following no rye was included as a control. Rye biomass, C:N ratio, and N accumulation increased when terminated 6 or 12 DAP corn compared with rye terminated 17 or 3 DBP corn. Corn seedlings were taller from the PG treatments. More radicle root rot was observed when rye was terminated 3 DBP, 6 DAP, and 12 DAP corn than for the 17 DBP treatment and the no rye control. Generally, greater Pythium Clade B populations were detected on radicles and seminal roots of corn from the PG treatments. Corn populations, ears, or barren plants were not affected by the treatments. In both years, the no rye control had the greatest corn yield and the 12 DAP treatment had the lowest yield. Our results suggest that PG increased corn seedling root disease and contributed to reduced corn yield.

title: Synthesis and characterization for new Zn(II) complexes and their optimizing fertilization performance in planting corn hybrid
abstract: Novel Zn(II) benzohydrazide complexes have been synthesized using Zn(NO 3 2 *6H 2 O salt. All new synthesises were investigated by available analytical and spectral tools to demonstrate their formulae. Binuclear complexes were proposed with all ligands through pentadentate mode of bonding. Octahedral geometry was the only structural form proposed for complexes. Benzohydrazide derivatives coordinate by the same mode, which point to negligible effect of p substituents on donor site environment. This mode was verified basically by IR and 1 H, 13 C NMR spectra. According to XRD patterns, crystallite particles of complexes were appeared in nanosized range. Such feature is preferable in variable application fields. Molecular modeling and molecular docking were interested in this study to strengthen experimental studies. One of these complexes [Zn(II) H 2 L 2 was examined to be an additive optimizing the performance of traditional fertilizer (NH 4 NO 3 in planting corn hybrid. This complex significantly improved components of photosynthetic carbon assimilation as photosynthetic pigments, sucrose, and soluble sugars. Interestingly, the applied complex induced responses, which were consistently higher than those treated by traditional fertilizer (NH 4 NO 3 Therefore, these results highlight the promising behavior of Zn(II) H 2 L 2 complex in planting improvement.

title: Effect of Planting Corn Harvest Cattle (TJPS) on sustainable integrated farming system in the Village of Raknamo West Kupang Subdistrict of Kupang Regency, East Nusa Tenggara
abstract: The aim of this study is to show community livelihood changes through the improvement of corn and cattle by application of "Planting Corn Harvest Cattle" (TJPS) TJPS is not literally meant that planting corn will that produced cattle, however it is a "tagline" to encourage farmers in the East Nusa Tenggara (NTT) that by improving corn production will give extra cash to buy cattle. The method was a survey involving 50 farmers, collecting primary and secondary data. The productivity of corn in NTT in 2018 was 2.52 ton/ha, while at National level was 5.24 ton/ha. Survey indicated that before TJPS, farmers in Raknamo village produced only 27.9 ton per one planting season, while at TJPS farmers produced 82.1 ton per one planting season, or it almost tripled. For cattle ownership, Raknamo farmers started with no cattle and now own 41 head of cattle. The use of corn cobs mixing with leaf of Tarramba Leucaena give DWG of 0.3 to 0.5 kg/hd/day. Thus it is concluded that TJPS would be an excellent entry door into a sustainable integrated farming system of corn and cattle in the dry land and climate of NTT.

title: Weed growth and sweet corn yield as affected by planting patterns and mulch types in organic farming practice
abstract: Weed is the main problem in organic agriculture. Intercropping is an agricultural practice to control weeds. The study intended to compare weed growth and sweet corn yield in intercropping and monoculture patterns with different mulch types and to determine the best planting pattern and mulch type for crop growth and yield. A field experiment was conducted at the CAPS Research Station situated in Air Duku Village, Rejang Lebong, Bengkulu, at 1054 m above sea level. The experiment used Completely Randomized Block Design (RCBD) with two factors. There were no interactions between planting patterns and organic mulch types on weed growth and sweet corn yield. Intercropping sweet corn kidney bean and sweet corn string bean suppressed the growth of weeds. Also, intercropping of sweet corn kidney bean or sweet corn string bean had similar sweet corn yield with monoculture. Rice straw and rice husk mulch suppressed weeds growth better than coffee husk mulch.

title: Responses of runoff and soil erosion to planting pattern, row direction, and straw mulching on sloped farmland in the corn belt of northeast China
abstract: Runoff loss and soil erosion are the main factors threatening grain production in the corn belt of northeast China (CBNC) and are closely related to the planting pattern, row direction, and practice of straw mulching. A 4 year (2017 2020) field experiment was conducted under natural rainfall conditions from 2017 to 2020 to ascertain the effects of the planting pattern, including continuous corn (C) perennial alfalfa (A) and soybean corn rotation (S C) row direction including parallel slope (PS) and cross slope (CS) and practice of straw mulching (marked by the subscript SM) on runoff and soil erosion from sloped farmland in the CBNC. Runoff depth and the amount of soil loss under continuous corn with parallel slope cultivation (PSC) were higher than those of alfalfa with parallel slope cultivation (PSA) and soybean corn rotation with parallel slope cultivation (PSS PSC) during 2017 2020. Cross slope planting (CSA, CSC, and CSS CSC) reduced runoff loss by 7.8 23.3% and the amount of soil erosion by 15.9 73.7% when compared to parallel slope planting (PSA, PSC, and PSS PSC) The CSA treatment generated the least runoff depth and soil erosion amount among CSA, CSC, and CSS CSC. Straw mulching (PSCSM and PSSSM PSCSM) decreased runoff by 82.6 85.5% and reduced the amount of soil erosion by 87.9 91.5% relative to not using straw mulching treatments (PSC and PSS PSC) Therefore, cross slope cultivation and straw mulching can significantly reduce surface runoff and soil erosion on slope farmland. The CSA treatment and the practice of straw mulching were recommended for soil and water conservation in the CBNC.

title: Dose treatment of legume compost with the number of plants per planting hole for land efficiency and increasing sweet corn production
abstract: Sweet corn requires large nutrients for growth and production. Legume compost can be used as fertilizer to fulfill nutrients that are beneficial for plant growth. The use of legume compost can substitute NPK elements which function for plant growth. Other efforts that can be made to increase sweet corn production due to the narrowing of agricultural land are to increase the plant population, which is usually 1 plant per planting hole can now be added to 2 to 3 plants per planting hole. The purpose of this study was to determine the best dosage combination of legume compost with the number of plants per planting hole. The research was conducted in an experimental field in Politeknik Negeri Jember. The study was conducted using a factorial randomized block design (RBD) with 2 factors, namely the dose of legume compost and the number of plants per planting hole. From this study there were 9 treatment combinations and 3 replications so that there were 27 experimental units. Anova test results showed that the treatment of legume compost dosage and the number of plants per planting hole had no significant effect on the parameters of plant height, number of leaves, corn cob length, corn cob weight, corn cob diameter, and sweetness level, but had significant effect on the parameter of corn cob production per unit observation.