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العنوان
Physiological Studies on Common Bean Crop /
المؤلف
Shokr, Mahmoud Mohamed Badawy.
هيئة الاعداد
باحث / محمود محمد بدوي شكر
مشرف / محمود محمد زغلول
مشرف / سمير طه محمود العفيفي
مناقش / محمود محمد زغلول
مناقش / سمير طه محمود العفيفي
الموضوع
Vegetable. Cover crops. Crop improvement.
تاريخ النشر
1997.
عدد الصفحات
p 126. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة الزراعية وعلوم المحاصيل
تاريخ الإجازة
1/1/1997
مكان الإجازة
جامعة المنصورة - كلية الزراعة - Vegetable Department
الفهرس
Only 14 pages are availabe for public view

from 149

from 149

Abstract

Snap bean (Phaseo/us vulgaris, L.) is one of the most important
vegetable crops grown in Egypt, which occupies a great figure in the
local consumption and export.
The cultivated area for green and dry common bean reached to
37000 and 18000 feddan, respectively according to statistics data of
1994. Average total yield / feddan was 4.75 tons for green pods yield
and 1.167 tons for dry seed yield in 1994.
Snap bean crop requires a comparatively small amount of
nitrogen compared with other vegetable crops. This legume crop is
associated with symbiotic bacteria that convert atmospheric nitrogen
into forms the plant can use. These bacteria depend directly upon the
plant for their energy supply and can not convert atmospheric nitrogen
into a usable form unless they are assoclated with specific plants. The
amount of nitrogen converted into a usable form depends upon the
vegetable involved, and the estimated pounds of nitrogen fixed per acre
for some vegetables are as follows: Peas 72 Ib, peanut 42 Ib, beans
40 lb and soy beans 58 Ib (Delwich, 1970).
These bacteria may be purchased in a pea and bean inoculant.
If the area has never grown by beans or peas before, some of this
inoculant can be dusted onto the moistened (not soaked) seed. On the
other hand, if the area has grown beans before, it is usually of little
value to add additional inoculant.
However, the ability of the roots of legumes to extract and fix
nitrogen from the soil atmosphere, due to the activity of bacteria of the
Rhizobium genus, which live in symbiosis within the legume roots.
provides an advantageous mechanism.
For the establishment of leguminous crops on soils which have
low nitrogen reserves, many leguminous plants can develop bacterial
nodules on their roots in relatively acid conditions and on soils, which
may be slightly deficient in P, Ca and other elements.
However, farmers differ between each other in fertilizing snap
beans plants. Some fertilize snap beans with high level of P, K and
small amount of nitrogen . To secure further information in this regard,
this study was conducted to evaluate the response of some snap bean
cultivars to different levels of NPK fertilization with or without
inoculation with Rhizobium . Descriptive information of their growth.
mineral composition and yield were considered.