However, this legislation does not address the possibility of defoliation
followed by deferral.
performed in the stage R5 are the most harmful ones to the crop, reducing the productive potential of soybean.
There was no interaction between herbage allowance and phenological stage for the interval between defoliations
(p = 0.7258).
First, since soybean resistance to insect defoliation
is a quantitatively inherited trait (Sisson et al., 1976; Rufener et al., 1989), simple backcrossing has not been successful in transferring the full complement of resistance genes from unadapted germplasm accessions.
were conducted additively by tearing an appropriate number of leaves on two or three successive dates during the peak feeding time of E.
The vegetation and bird communities were sampled in both areas in 1984, before defoliation
or pesticide treatment, and again in 1993.
Considering that the supply of protein to grazing animals, in tropical pastures, can interfere with forage intake and change leaf blade tissues flow, the present experiment evaluated the intensity and defoliation
frequency and quantified the different leaf blade flows in Alexandergrass, grazed by beef heifers, supplemented or not with a protein salt.
Properly timing defoliation
involves balancing the value of potential increases in yield with the value of changes in fiber quality.
Possible number of defoliations
: the product of leaf longevity (SANTOS et al., 2011a) and defoliation
may remove a larger fraction of foliage nutrients than of carbon, the CNB is a potential explanation for DIR (e.g., Tuomi et al.
It has excellent winter hardiness, is adapted to a diversity of soil conditions, tolerates frequent defoliation
, and tolerates drought (Spencer et al., 1975; Taylor and Meche, 1982; Speer and Allinson, 1985; Peterson et al., 1994).
A careful control of time, frequency and intensity of defoliation
of the tillers of Italian ryegrass in seed production fields can be crucial to succeed in this production system.