Gwajin kwayar shuka

Za'a iya kimanta abubuwan gina jiki na shuka ta hanyar gwada samfurin noma daga wannan shuka. Wadannan gwaje-gwaje suna da mahimmanci a cikin aikin gona tunda ana iya daidaita aikace-aikacen taki idan an san matsayin Abinci mai gina jiki na shuke-shuke. Nitrogen galibi yana iyakance ci gaban shuke-shuke kuma shine mafi yawan kayan abinci.

 Lokaci mafi amfani 
Gwaje-gwaje na ƙwayoyin kusan koyaushe suna da amfani, tunda suna ba da ƙarin bayani game da ilimin lissafi na amfanin gona. Gwaje-gwaje na ƙwayoyin cuta suna da amfani musamman a wasu yanayi;

 For monitoring the nitrogen status of a crop throughout the growing season. Soil tests are commonly performed before planting.
 In highly controlled environments, such as hydroponic production in greenhouses, crops require a constant feed of nutrients in their water supply. Even a transient lack of nutrients can reduce yields. Soil testing results cannot reveal actual nutrient uptake and nutrient mobility.  Soil tests may be insufficient to manage crop nitrogen status. Soil testing may be more suitable when growing crops in slow-release composts and manures.
 When there is a risk that a nutrient application blocks uptake or unlocks mobility of other nutrients.  In over application this can lead to toxic conditions, such as during the application of poultry litter that contains micro nutrients such as copper in high concentrations.
 To guarantee that nitrogen levels in the crop do not exceed a certain limit. High concentrations of nitrates has implications to human health because nitrates can be converted into nitrites in the human digestive tract. Nitrites can react with other compounds in the gut to form nitrosamines, which appear to be carcinogenic. Crops may contain high concentrations of nitrate when excess fertilizer is applied. This can be an issue in crops with high levels of nitrate uptake, such as spinach and lettuce.[<span title="This claim needs references to reliable sources. (March 2021)">citation needed</span>]

Wani yarjejeniyar gwaji wanda ya dogara da haske shine gwajin OJIP. Wannan hanyar tana nazarin karuwar haske da aka fitar daga ganyen da suka dace da duhu lokacin da aka haskaka su. Hawan haske a lokacin na biyu na haske ya bi wani sashi tare da matsakaicin matsakaici, wanda ake kira O, J, I, da P matakai. Bugu da kari, matakin K ya bayyana a lokacin takamaiman nau'ikan damuwa, kamar N-ƙarancin. Bincike ya nuna cewa matakin K yana iya auna N-matsi.

 Manazarta 

Rukuni:Shafuka masu fassarorin da ba'a duba ba