Table 8

# Cotton Productivity Entry and Exit in Cotton Farming

||||Model 1|||Model 2||
|---|---|---|---|---|---|---|---|
||(1)|Tobit<br>(2)|OLS<br>(3)|CLAD<br>(4)|Tobit<br>(5)|OLS<br>(6)|CLAD<br>(7)|
|Age of head|0_._01|0_._009|0_._009|0_._013|0_._009|0_._009|0_._011|
||0_._007|0_._007|0_._007|0_._007_∗_|0_._007|0_._007|0_._007|
|Age Squared|_−_0_._0001|_−_0_._0001|_−_0_._0001|_−_0_._0001|_−_0_._0001|_−_0_._0001|_−_0_._0001|
||0_._00007|0_._00007_∗_|0_._00007_∗_|0_._00007_∗∗_|0_._00007_∗_|0_._00007_∗_|0_._00007_∗∗_|
|Male hh. head|0_._087|0_._091|0_._091|0_._11|0_._091|0_._091|0_._11|
||0_._047_∗_|0_._047_∗_|0_._047_∗_|0_._047_∗∗_|0_._047_∗_|0_._047_∗_|0_._047_∗∗_|
|Family size|0_._008|_−_0_._001|_−_0_._001|0_._001|0|0|0_._004|
||0_._036|0_._036|0_._036|0_._036|0_._036|0_._036|0_._036|
|Share of males|_−_0_._034|_−_0_._048|_−_0_._048|_−_0_._059|_−_0_._048|_−_0_._048|_−_0_._005|
||0_._105|0_._105|0_._105|0_._105|0_._105|0_._105|0_._105|
|Farm type|0_._059|0_._052|0_._052|0_._04|0_._05|0_._049|0_._039|
||0_._044|0_._044|0_._044|0_._044|0_._044|0_._044|0_._044|
|Relative plot size|_−_0_._377|_−_0_._543|_−_0_._543|_−_0_._483|_−_0_._546|_−_0_._546|_−_0_._565|
||0_._024_∗∗∗_|0_._048_∗∗∗_|0_._048_∗∗∗_|0_._043_∗∗∗_|0_._048_∗∗∗_|0_._048_∗∗∗_|0_._044_∗∗∗_|
|Livestock|_−_0_._06|_−_0_._067|_−_0_._067|_−_0_._06|_−_0_._065|_−_0_._065|_−_0_._07|
||0_._04|0_._040_∗_|0_._040_∗_|0_._04|0_._04|0_._04|0_._040_∗_|
|Harrows|_−_0_._064|_−_0_._069|_−_0_._069|_−_0_._082|_−_0_._083|_−_0_._083|_−_0_._113|
||0_._053|0_._053|0_._053|0_._053|0_._053|0_._053|0_._054_∗∗_|
|Ploughs|0_._032|0_._024|0_._024|0_._028|0_._021|0_._021|0_._027|
||0_._027|0_._027|0_._027|0_._027|0_._027|0_._027|0_._026|
|Basal fertilizer|_−_0_._705|_−_0_._694|_−_0_._694|_−_0_._706|_−_0_._688|_−_0_._688|_−_0_._673|
||0_._256_∗∗∗_|0_._252_∗∗∗_|0_._252_∗∗∗_|0_._257_∗∗∗_|0_._251_∗∗∗_|0_._251_∗∗∗_|0_._253_∗∗∗_|
|Top-dressing fert.|_−_0_._616|_−_0_._611|_−_0_._611|_−_0_._602|_−_0_._613|_−_0_._613|_−_0_._625|
||0_._281_∗∗_|0_._278_∗∗_|0_._278_∗∗_|0_._284_∗∗_|0_._277_∗∗_|0_._277_∗∗_|0_._281_∗∗_|
|Cotton price|0_._07|0_._08|0_._08|0_._074|0_._082|0_._082|0_._032|
||0_._062|0_._062|0_._062|0_._062|0_._062|0_._062|0_._062|
|_F_ <sup>1</sup>|_−_0_._469|_−_0_._503|_−_0_._503|_−_0_._505|_−_0_._505|_−_0_._505|_−_0_._521|
||0_._058_∗∗∗_|0_._058_∗∗∗_|0_._058_∗∗∗_|0_._059_∗∗∗_|0_._058_∗∗∗_|0_._058_∗∗∗_|0_._059_∗∗∗_|
|_F_ <sup>2</sup>|0_._19|0_._193|0_._193|0_._19|0_._19|0_._19|0_._183|
||0_._039_∗∗∗_|0_._039_∗∗∗_|0_._039_∗∗∗_|0_._039_∗∗∗_|0_._039_∗∗∗_|0_._039_∗∗∗_|0_._039_∗∗∗_|
|_φ_||0_._009|0_._009|0_._006|0_._01|0_._01|0_._01|
|||0_._002_∗∗∗_|0_._002_∗∗∗_|0_._002_∗∗∗_|0_._002_∗∗∗_|0_._002_∗∗∗_|0_._002_∗∗∗_|
|Constant|_−_0_._958<br>0_._309_∗∗∗_|_−_0_._951<br>0_._309_∗∗∗_|_−_0_._95<br>0_._309_∗∗∗_|_−_0_._882<br>0_._312_∗∗∗_|_−_0_._948<br>0_._309_∗∗∗_|_−_0_._948<br>0_._309_∗∗∗_|_−_0_._612<br>0_._321_∗_|
|Observations|3418|3418|3418|3418|3418|3418|3418|
|_R_<sup>2</sup>|0.14|0.15|0.15|0.15|0.15|0.15|0.15|

Robust standard errors in parentheses: * significant at 10%; ** significant at 5%; *** significant at 1%. Column (1) does not include _φ_ . Tobit, OLS and CLAD refer to different models used to estimate _φ_ . See Appendix 1. Model 1: first stage includes total land tenure, family size, age, age squared, farm type, a dummy for male-headed farms, the proportion of males in the family, a dummy for livestock rasing households, and assets (harrows, ploughs) in monetary units. Model 2: first stage includes total land tenure, family size, age, age squared, farm type, a dummy for male-headed farms, the proportion of males in the family, a dummy for livestock rasing32 households, and assets (harrows, ploughs) in physical units.