Effect of chemicals on flower drop, fruit set and yield on rainy and winter season crops of guava

摘要

There are two distinct seasons of flowering, i.e. spring (April-May) and rainy (August-September) in guava (Psidium guajava L.) in north India. In Punjab, fruits produced in rainy season have poor flavour with insipid taste and highly infested with fruit fly. Thus, it is advisable to avoid taking rainy season crop since fruits of winter season crop are better in every respect. Rainy season crop can be avoided by deflowering guava t3rees in spring season with chemicals, thereby inducing the return bloom for better winter season crop. Spraying of urea (15 percent) causes abscission of flower buds in Allahabad Safeda, resulting in increased fruit size and yield (Rajput et al., 4). Similar results have been obtained by Singh et al., Gaur and Briana.