Growth and fruit production of physic nut as a function of plant growth area and Tifton 85
DOI:
https://doi.org/10.5380/rf.v44i2.32291Keywords:
Cultivo consorciado, espaçamento de plantio, planta forrageira, Jatropha curcas L.Abstract
Abstract
This essay compared development and fruit production of Jatropha curcas L. in relation to growing space and presence of an herbaceous competitor. The essay was composed by two circular plots with four plant growing areas (1.57 m2, 3.92 m2, 6.28 m2, and 8.63 m2) with eight replications for plot intercropped or not with Tifton 85. The cultivation of physic nut in the spacing of 6.28 m2 resulted in lower plant height and higher levels of leaf nitrogen and phosphorus, while the 1,57 m2 spacing resulted in increased plant height. The lowest values for plant height, number of leaves, number of fruits, SPAD index, and levels of nitrogen and phosphorus resulted in the intercropped plot. However, the 1.57 m2 spacing yelded higher stem diameter. Crown diameter presented the highest values in the 3.92 m2 spacing while the 1.57m2 limited the crown expansion. Maximum fruit production in monocrop plot was reached 18 months after planting date, which corresponded to the warmest season independently of planting space.
Keywords: Intercropping; planting spacing; forage; Jatropha curcas L.
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