IJAIR NAAS Score : 3.99 ,ISSN : 2319-1473

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IJAIR NAAS Score : 3.99
"Submissions Open For Volume 9,Issue 2,Sept.-Oct., 2020"


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Yield Potential and Economics of Rabi Maize as Influenced by Legume Crops, Residue Management Practices and Nitrogen Levels

P. Ammaji; Ch. Pulla Rao
A field experiment was conducted on sandy clay soils of Agricultural College Farm, Aswaraopet, Khammam (dt.) to study the performance of Kharif legume crops residue management practices and nitrogen levels on the soil physical, chemical and microbial characters as influenced by legume residue management practices in legume maize sequence. The experiment was laid out in split- split plot design and the treatments were replicated thrice with three legumes, viz., cowpea, (M1) fieldbean (M2) and greengram (M3) as main plot treatments taken up during the kharif season and two residue management practices viz., residue removal (R0) and residue incorporation (R1) as sub plot treatments. Four nitrogen levels 75 (N1), 150 (N2), 225 (N3) and 300 kg ha-1 (N4) as sub- sub plot treatments to maize. The experiment was conducted for two consecutive years. Among legume crops, the maximum fresh weight was produced by cowpea i.e., 20,280 and 22,815 kg ha-1 during the first and the second year of experimentation respectively, followed by field bean, while the lowest fresh weight of 8,676 and 9,760 kg ha-1 was obtained with greengram in the first and the second year, respectively. However, the highest pod yield and greengram equivalent yields were also recorded by cowpea followed by field bean and greengram. The dry matter accumulation of 7753 kg ha-1 and 8722 kg ha-1 were recorded with cowpea in the first and the second year, respectively. The economic yield in terms of greengram equivalent yield was maximum (1088 and 1091 kg ha-1) with cowpea during 2011 and 2012, respectively. While, the lowest greengram equivalent yields of 952 and 976 kg ha-1 were recorded with greengram in the first and the second years respectively. Gross returns, net returns and benefit cost ratio worked out for entire legume - maize sequence taking into consideration of the inputs used in kharif and rabi seasons, and the economic yield for both the seasons during the two years of the study. Maximum net returns of maize Rs. 80,646 ha-1 and 97,442 ha-1, respectively obtained during the first and the second year with incorporation of cowpea residues along with application of nitrogen @ 300 kg ha-1, followed by cowpea with residue incorporation at 225 kg N ha-1. While the lowest net returns of Rs 40,786 ha-1 and Rs 55,115 ha-1 were obtained with greengram as preceding crop without residue at 75 kg N ha-1.
Select Volume / Issue:
Year:
2020
Type of Publication:
Article
Keywords:
Maize; Legume Crops; Equivalent Yields; Economics; BCR
Journal:
IJAIR
Volume:
9
Number:
2
Pages:
120-125
Month:
September
ISSN:
2319-1473
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