Articles
EFFECT OF CU, MN AND ZN FOLIAR APPLICATION ON COMMON BEAN GROWTH, FLOWERING AND SEED YIELD
Article number
158_36
Pages
307 – 320
Language
Abstract
Field trials were carried out in clay loam soil with pH 7.5 at the Experimental Farm of the Faculty of Agriculture, Moshtohor.
The soil contained 3.30, 0.10 and 0.25 ppm of Cu, Mn and Zn, respectively.
Seeds of Phaseolus vulgaris cv.
Giza-3 were sown on the 8th of April and the 7th of March of both 1981 and 1982 summer seasons respectively.
Plants were supplied 3 times with Cu, Mn or Zn sulphates as foliar spray at the 2nd, 4th and the 6th true leaf stage.
This experiment included 10 treatments: 10, 20, 40 ppm Cu; 25, 50, 100 ppm Mn; 25, 50, 100 ppm Zn; and the control treatment which was sprayed with distilled water only.
All treatments were fertilized with 33 kg N, 48 kg P2O5 and 36 kg2K O per feddan.
A complete randomized block design with 4 replications was adopted.
Results showed that Cu, Mn or Zn foliar application had no promising effect on vegetative growth in terms of plant height, internode length, number of leaves, fresh and dry weight per plant at full blooming stage.
All treatments enhanced flowering date 3–7 days compared with the control.
Spraying plants with 40 ppm Cu, 25 ppm Mn or 25–50 ppm Zn considerably increased number of flowers per plant; whereas fruit setting percentage was significantly increased by using 10–20 ppm Cu or 25 ppm Zn compared with other treeatments.
Micronutrient application led to a slight increase in the number of seeds per pod and netting percentage.
The treatments which produced higher number of pods per plant showed the least number of seeds per pod.
Application of 100 ppm Mn increased weight of 100 seeds than the control; however, other treatments decreased it.
Application of 20 ppm Cu, 100 ppm Mn and 50–100 ppm Zn significantly increased total dry seed yield which reached a maximum of 31–38% over the control by using 100 ppm Mn as foliar spray.
This increase could be mainly referred to an increase in seed index and not to the number of pods per plant.
NPK uptake and total carbohydrate accumulation in dry seeds showed similar response as did the total dry seed yield.
The soil contained 3.30, 0.10 and 0.25 ppm of Cu, Mn and Zn, respectively.
Seeds of Phaseolus vulgaris cv.
Giza-3 were sown on the 8th of April and the 7th of March of both 1981 and 1982 summer seasons respectively.
Plants were supplied 3 times with Cu, Mn or Zn sulphates as foliar spray at the 2nd, 4th and the 6th true leaf stage.
This experiment included 10 treatments: 10, 20, 40 ppm Cu; 25, 50, 100 ppm Mn; 25, 50, 100 ppm Zn; and the control treatment which was sprayed with distilled water only.
All treatments were fertilized with 33 kg N, 48 kg P2O5 and 36 kg2K O per feddan.
A complete randomized block design with 4 replications was adopted.
Results showed that Cu, Mn or Zn foliar application had no promising effect on vegetative growth in terms of plant height, internode length, number of leaves, fresh and dry weight per plant at full blooming stage.
All treatments enhanced flowering date 3–7 days compared with the control.
Spraying plants with 40 ppm Cu, 25 ppm Mn or 25–50 ppm Zn considerably increased number of flowers per plant; whereas fruit setting percentage was significantly increased by using 10–20 ppm Cu or 25 ppm Zn compared with other treeatments.
Micronutrient application led to a slight increase in the number of seeds per pod and netting percentage.
The treatments which produced higher number of pods per plant showed the least number of seeds per pod.
Application of 100 ppm Mn increased weight of 100 seeds than the control; however, other treatments decreased it.
Application of 20 ppm Cu, 100 ppm Mn and 50–100 ppm Zn significantly increased total dry seed yield which reached a maximum of 31–38% over the control by using 100 ppm Mn as foliar spray.
This increase could be mainly referred to an increase in seed index and not to the number of pods per plant.
NPK uptake and total carbohydrate accumulation in dry seeds showed similar response as did the total dry seed yield.
Publication
Authors
M.R. Gabal, I.M. Abdellah, I.A. Abed, F.M. El-Assiouty
Keywords
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