Establishing techniques of Mungbean (Vigna radiata L.) and sesame (Sesamum Indicum L.) after rainfed wetland rice

Date

2-1990

Abstract

Two field experiments involving mungbean and sesame, and a farm level survey were carried out to identify a suitable planting practice for dryland crops after rice that could effectively be practiced in the farm without loss of time and the adverse of soil mixture.

Crop growth and grain yield of mungbean were found better when planting was done using no-tillage methods compared to conventional tillage practice and furrow planting in both low and high soil moisture regimes. While tillage and furrow planting had 15 days delay due to excess soil moisture during rice harvest, relay, broadcast, and dibble plantings were able to produce fairly good harvests without delay. A great reduction of mungbean yield was observed in the high soil moisture regime only when conventional tillage (38%) and furrow planting (38%) were used; this was not so with no-tillage methods (0.7 - 16%). When sesame was planted using both tillage and no-tillage methods under different rates and methods of nitrogen application, the no-tillage method of planting was found to be almost unsuitable due to waterlogging in the furrows. Though higher rates and closer placement of nitrogen affected crop emergence, furrow placement ultimately improved crop yield. However, higher nitrogen rate had little effect on sesame growth, yield and dry matter production.

The no-tillage plots not only maintained a higher soil water content but also allowed quick surface drainage and leaching that reduced waterlogging during rainfall events. In mungbean, total uptake of nitrogen, phosphorus, and potassium were higher with the no-tillage than with the tillage method though nutrient content in the plant tissue did not differ among planting practices. But in sesame, the uptake of nitrogen was higher in tilled than in untilled soil. Out of 118 farm families surveyed during the study, 50 percent established their dryland crop following tillage and 24 and 26 percent by minimum-tillage and no-tillage respectively. The farm level survey confirmed the time benefit from utilizing no-tillage planting techniques in the farm. The yield of mungbean under no-tillage management was poor at the farm level. Among relay, broadcast, and dibble plantings, relay was found to be the best with respect to turn-around time, soil moisture conservation, and growth and yield of mungbean. Farmers were in favor of relay and broadcast but not of dibble planting due to the labor intensiveness of the method.

Document Type

Dissertation

Degree

Master of Science in Agronomy

Major Course

Major in Agronomy

College

Graduate School (GS)

Adviser/Committee Chair

Elpidio L. Rosario

Committee Member

Eduardo P. Paningbatan, Jr., Enrique C. Paller, Dario C. Sabularse

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 996 1990 A42 S37

This document is currently not available here.

Share

COinS