Amount of the rice stubble on the weeds and the beans (Phaseolus vulgaris L.).
DOI:
https://doi.org/10.15517/am.v14i1.11990Abstract
The assay was conducted
between June 2000 and January 2001 at the Fabio Baudrit
Experiment Station of the University of Costa Rica, located
in the San Jose district, in Alajuela, Costa Rica. The objective
of the trial was to assess the influence of 0; 1.85; 3.70; 5.60;
7.40 and 11 metric tons/ha (mt/ha) of dry matter of rice
stubble (Var. CR-5272) as dead mulch on the ground surface,
on the weeds and on the yield of the Huasteco bean variety,
planted with least tilling. It was found that the rice stubble, in
amounts over 3.7 mt/ha on the ground, drastically diminished
the number of weeds, due mainly to the reduction of the
temperature fluctuations and the percentage of
photosynthetic active and total light that reached the soil
surface. Besides, it improved the moisture holding capacity
of the soil. The favorable effects of these factors were
reflected in a greater production of bean grains.
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