Impact of cropping systems and resource conservation techniques on productivity and profitability of systems

A suitable cropping system seem to be the possible solution to meet the continuous increase in demand for food, stability of income and diverse requirement of food grains. Selection of suitable cropping system for conservation of resources has prime importance now a day. The cropping systems selected in study have higher potential of production along with incorporable residues during winter. The residues of cotton, castor and mustard crops (Crops in selected cropping systems) have more potential to feed nutrients to soil as compared to burning. So incorporation of such crop residues in to soil helps to recycle the nutrients to correct their deficiencies. Farmyard manure is being used as major source of organic manure in field crops. Thus to maintain the soil health, integrated nutrient management approaches involving FYM and mineral source need to be standardized. So there is need to find out agronomically efficient and economically viable cropping system which can perform better for increasing productivity and profitability with association of conservation of natural resources.

The experiment was laid out in split plot design with three replications. Sixteen treatment combinations comprising of four cropping system treatments viz, C₁: Cotton- Summer Pearlmillet, C₂: Greengram + Kharif Castor (Relay), C₃: Greengram - Mustard - Summer Pearlmillet and C₄: Greengram - Rabi Castor and two residue incorporation treatments viz, R₀: No residue incorporation and R₁: Residue incorporation as well as two fertilizer doses viz, F₁: 100% RDN through inorganic fertilizer and F₂: 75% RDN through inorganic fertilizer + 25% RDN through FYM were evaluated in the study.

Cotton - summer pearlmillet cropping system found significantly superior by recording higher pearlmillet equivalent yield, system productivity and system profitability while, total weed count/m² and total weed dry weight were found the lowest under greengram kharif castor (relay) cropping system. Residue incorporation secured top position by recording significantly the highest pearlmillet equivalent yield, system productivity and system profitability as well as lowest total weed count/m² and total weed dry weight. Application of 75% RDN through inorganic fertilizer + 25% RDN through FYM recorded significantly highest pearlmillet equivalent yield, system productivity and system profitability. In case of weed count and weed dry weight, 100% RDN through inorganic fertilizer found significantly superior by recording lowest total weed count/m² and total weed dry weight.