Soil Chemical Analysis

B6nassy, C., 1955. R6marques sur deux Aphelinid6s: Aphelinus mytilaspidis Le Baron et Aphytis proclia Walker. Annls l~piphyt. 6: 11-17. Lord, F. T. & MacPhee, A. W., 1953. The influence of spray programs on the fauna of apple orchards in Nova Scotia II. Oyster shell scale. Can. Ent. 79: 196-209. Pickett, A. D., 1946. A progress report on long term spray programs. Rep. Nova Scotia Fruit Grow. Ass. 83 : 27-31. Pickett, A. D., 1967. The influence of spray programs on the fauna of apple orchards in Nova Scotia XIV. Can. Ent. 97: 816-821. Tothill, J. D., 1918. The predacious mite Hemisarcoptes malus Shimer and its relation to the natural control of the oyster shell scale Lepidosaphes ulmi L. Agric. Gaz. Can. 5 : 234-239.

http://link.springer.com/content/pdf/10.1007/BF01976688.pdf

Soil enzymes: Kuprevich, V. F. & Shcherbakova, T. A.: Translated from the Russian edition (1966), published by the Indian National Scientific Documentation Centre, New Delhi 1971. 392 pp., offset printing from type script, paper cover. Obtainable from U.S. Department of Commerce, National Technical Information Service, Springfield, Va. 22151

Statistical Databases

Agriculture today places great strains on biodiversity, soils, water and the atmosphere, and these strains will be exacerbated if current trends in population growth, meat and energy consumption, and food waste continue. Thus, farming systems that are both highly productive and minimize environmental harms are critically needed. How organic agriculture may contribute to world food production has been subject to vigorous debate over the past decade. Here, we revisit this topic comparing organic and conventional yields with a new meta-dataset three times larger than previously used (115 studies containing more than 1000 observations) and a new hierarchical analytical framework that can better account for the heterogeneity and structure in the data. We find organic yields are only 19.2% (±3.7%) lower than conventional yields, a smaller yield gap than previous estimates. More importantly, we find entirely different effects of crop types and management practices on the yield gap compared with previous studies. For example, we found no significant differences in yields for leguminous versus non-leguminous crops, perennials versus annuals or developed versus developing countries. Instead, we found the novel result that two agricultural diversification practices, multi-cropping and crop rotations, substantially reduce the yield gap (to 9 ± 4% and 8 ± 5%, respectively) when the methods were applied in only organic systems. These promising results, based on robust analysis of a larger meta-dataset, suggest that appropriate investment in agroecological research to improve organic management systems could greatly reduce or eliminate the yield gap for some crops or regions.

/pdf/diversification-practices-reduce-organic-to-conventional-2met0flsav.pdf

Diversification practices reduce organic to conventional yield gap

Chemical composition of white (Morus alba), red (Morus rubra) and black (Morus nigra) mulberry fruits

Bu calismanin amaci, portakal ( Citrus cinensis var. "Washington Navel") budama atiginin (PBA) iki farkli toprak isleme aletiyle (freze ve diskaro) topraga uygulanmasinin bazi toprak verimlilik parametrelerindeki degisim uzerine etkilerini belirlemektir. Her yil yapilan budamalar sonrasi budama atiklari kuyruk milinden hareketli parcalama makinesi ile parcalama isleminden sonra topraga uygulanmistir. Yapilan uygulamalar sonunda budama atiklarinin belirlenen toprak verimlilik parametreleri uzerine olan etkileri 0–10 cm ve 10–20 cm derinliklerinden alinan toprak orneklerinde tespit edilmistir. Calismada, budama atiklari kuru madde temel alinarak 306.0 kg da -1 olacak sekilde topraga uygulanmislardir. Calismada, ozellikle denemenin ikinci yilinda topragin organik madde (OM), katyon degisim kapasitesi (KDK), toplam azot (N), yarayisli fosfor (P), kalsiyum (Ca +2 ), potasyum (K + ), bakir (Cu +2 ) ve cinko (Zn +2 ) miktarlari ile elektriksel iletkenlik (EC) degerlerinde onemli artislar elde edilmistir. Diger taraftan, hacim agirligi, toprak reaksiyonu (pH) degerleri ile degisebilir sodyum (Na + ), demir (Fe +3 ) ve mangan (Mn +2 ) miktarlarinda azalma meydana geldigi belirlenmistir. Arastirmanin ikinci yilinda, diskaro ile yapilan PBA uygulamalari topragin yarayisli su (YS) miktarinda onemli duzeyde artis saglarken donemler arasinda onemli bir farklilik meydana gelmemistir. Elde edilen sonuclar dikkate alindiginda; PBA’nin bu yolla degerlendirilmesinin toprak verimliligi ve cevre acisindan onemli faydalar saglayabilecegi ongorulmektedir.

/pdf/portakal-citrus-sinensis-budama-atigi-uygulamalarinin-toprak-1qva0gzkvu.pdf

Portakal (citrus sinensis) budama atığı uygulamalarının toprak verimlilik parametrelerindeki değişim üzerine etkileri

Corrigendum to “Effects of conventional and organic fertilization on spinach (Spinacia oleracea L.) growth, yield, vitamin C and nitrate concentration during two successive seasons” [Sci. Horticult. 126 (2010) 415–420]

/pdf/kumluca-ve-finike-yoreleri-sera-sulama-sularinin-gaqdve5s1o.pdf

Kumluca ve Finike Yöreleri Sera Sulama Sularının Kalitelerinin Belirlenmesi

Evaluation of mineral contents of greenhouse plant wastes in Antalya Region

Bu calismada, farkli mineralizasyon oranina sahip vermikompost uygulamalarinin, marul bitkisinin bitki besin element icerigi uzerine etkilerinin arastirilmasi amaclanmistir. Bu amacla; vermikompost 4 dozda (0, 50, 100 ve 200 kg da -1 ) uygulanmis, 0, 30 ve 60 gun inkubasyona birakilmistir. Serada yurutulen bu calisma, tesaduf bloklari deneme desenine gore 3 tekerrurlu olarak yurutulmus ve deneme bitkisi olarak Yedikule duz marul cesidi kullanilmistir. Denemede, butun marul fidelerinin ayni gunde dikilebilmesi amaciyla ilk once 60. gun inkubasyona tabi tutulan uygulamalar, daha sonra topraga 30. ve 0. gunde uygulanan vermikompostlar topraga karistirilmis ve marul fideleri ayni gun saksilara dikilmistir. 9 haftalik yetisme periyodu sonunda bitkiler hasat edilmistir. Hasat sonrasi marul bitkilerinde azot (N), fosfor (P), potasyum (K), kalsiyum (Ca), magnezyum (Mg), demir (Fe), mangan (Mn), cinko (Zn), bakir (Cu), kukurt (S) ve bor (B) analizleri yapilmistir. Vermikompost uygulamalarinda, farkli inkubasyon surelerinin marul bitkisinin N, P, K, Ca, Mg, S, Zn, Fe, Mn, Cu, B icerikleri uzerine etkileri istatistiksel olarak onemli bulunmustur. Deneme sonucunda; inkubasyon suresinin uzamasina (60. gune dogru) bagli olarak marul bitkisinin Ca ve Mg iceriklerinin arttigi; P, Zn ve B iceriklerinin ise azaldigi tespit edilmistir. Marul bitkilerinin K, S, Mn ve Cu iceriklerinin 30. gune dogru azaldigi ancak 60. gunde arttigi; bitkilerin N ve Fe iceriklerinin ise 30. gune kadar arttigi ancak 60. gunde azaldigi belirlenmistir. Artan duzeyde yapilan vermikompost uygulamalarinin marul bitkisinin N, P, K, Mg, S, Fe, Mn, Zn, Cu ve B icerikleri uzerine etkileri istatistiksel olarak onemli bulunurken; Ca icerigi uzerine etkisi onemsiz bulunmustur. Artan vermikompost uygulamalarina bagli olarak marul bitkisinin N, P, K, Mn, Zn, Fe ve S iceriklerinin genel olarak arttigi; Mg, Cu ve B iceriklerinin ise azaldigi belirlenmistir.

/pdf/farkli-inkubasyon-donemlerinde-uygulanan-vermikompostun-2ih6z8w8m1.pdf

Farklı inkübasyon dönemlerinde uygulanan vermikompostun marul bitkisinin bitki besin element içeriği üzerine etkileri

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