Abstract
Conservation tillage has many advantages in crop production and weed control management. N-residue of hairy vetch as a green manure cover crop through tillage and no-tillage practices may increase inorganic-N level in soils and contribute to sustainable agriculture. Prior to corn cultivation, hairy vetch was cut after growing in the pots for 103 days. Six treated soils were prepared for no-tillage treatments (SRN, RN, and CN) and for tillage treatments (SRT, RT, and CT), where the soils were treated by shoot and root of hairy vetch residues, only root residues, and without application of hairy vetch as a control, respectively. Seeds of corn (Zea mays L.) were sown and grown for 56 days after sowing. The shoot and root biomasses of corn under no-tillage were higher than those of tillage. Furthermore, the shoot biomass of corn in both SRN and SRT were higher than that in other treatments. The root biomass of corn was higher in upper layers (0–5 cm depth) and deeper layers (>10 cm depth) than in middle layers (5–10 cm depth) of soils. In the upper layer, the NH4-N contents of no-tillage were higher at 9 and 23 DAT than those of tillage. The NH4-N content of the soils for no-tillage in the middle layer and the deeper layer was lower than that of the CT treatment. The NO3-N content of no-tillage in the middle and deeper layers was lower than that of CT at 23 and 65 DAT. N-uptake of corn in both no-tillage and tillage treatments with hairy vetch addition was higher than that of the control.
Highlights
In recent years, there has been increasing attention paid to tillage operation for crop production in tropical and subtropical regions
The nutrients for corn growth were derived from decomposing of hairy vetch and from fertilizers that were applied at the same time. ey were taken up by corn during its vegetative growth
Ammonium-N and Nitrate-N Distribution. e ammonium-N (NH4-N) content in the upper (0–5 cm depth), middle (5–10 cm depth), and deeper layers (>10 cm depth) of the soils for no-tillage and tillage treatments showed was decreased during the growing period of corn (Figure 1(a)– 1(c))
Summary
There has been increasing attention paid to tillage operation for crop production in tropical and subtropical regions. Tillage systems are separated into two types as conservation tillage and conventional tillage, where conservation tillage included no-tillage which has many advantages in the crop production system[1] and weed control management [2]. As a preferred winter legume cover crop in subtropical regions to suppress weeds in the agricultural field, has been well documented [5, 6]. N supply by shoot and root of hairy vetch through tillage and no-tillage systems may increase inorganic-N level in soils and contribute to better agronomic practices for sustainable agriculture. E advantages of including hairy vetch as cover crops into corn and sorghum N supply by shoot and root of hairy vetch through tillage and no-tillage systems may increase inorganic-N level in soils and contribute to better agronomic practices for sustainable agriculture. e advantages of including hairy vetch as cover crops into corn and sorghum
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
