RESPONSE OF POTATO TO SOME GROWTH SUBSTANCES UNDER ORGANIC AND INORGANIC FERTILIZATION | ||||
| Journal of Plant Production | ||||
| Article 14, Volume 28, Issue 2, February 2003, Page 931-946 PDF (10.6 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2003.242275 | ||||
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| Authors | ||||
| M. M. Farahat,; R. A. EI-Mergawi | ||||
| Botany Dept., National Research Centre, Ookkl, Cairo, Egypt. | ||||
| Abstract | ||||
| Response of tuber yield and chemical composition of potato CV. Nicola 10 some growth substances GAJ ( 200 ppm), methionine (100 ppm) and Pix ( 300 ppm) under complementary fertilizer between farmyard manure (FYM) and inorganic was st.udied during the two growing seasons 2001 and 2002 in El-Salhia, Sharkia Governorate . The results indicated that spraying of Pix increased whereas GAJ decreased tuber yield I plant and feddan. The highesl values of specific gravity and dry matter COlo) resulted from GAJ and Pix respectively . Spraying GA3 gave the highest N. P and K contents in the tuber, Application of the three growth substances increased Fe content especially Pix treatment. Potato plants fertilized with 50% FYM + 50% NPK produced the highest number of tubers I plant , luber yield J plant, tuber yield J fed and tuber diameter as well as starch % while. the heaviest tuber weight resulted from 100% NPK. The highest value of N% resulted from application of 25% FYM + 75% NPK , P and Fe contents were increased by increasing FYM level. Opposite trend was observed with K content. Conceming the interaction between growth substances and fertilizer. the results indicated that farmyard manure treatments were more effective on tuber yield I fed than the growth substances. The interaction between 50% FYM + 50% NPK arid Pix increased slgnificanUy tuber yield I plant, tuber yield I fed and tuber diameter as well as Fe content compared to control (100% NPK with spraying water ). The highest values of tuber weight and dry matter % were obtained with control. GAJ combined with 50"04, FYM + 500k NPK gave the highest specific gravity but, it gave the lowest dry matter % and T5S% . The combination of the growth substances with 50% FYM + 50%. NPK increased starch % as compared with 100% NPK. 25% FYM + 75% NPK with spraying water recorded the highest free amino acids and proteins contents . GAl combined with fertilizer treatments had an effect on increasing Nand P % , | ||||
| Keywords | ||||
| Potato; GA3; methionine; Pix. farmyard manure (FYM) | ||||
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