scholarly journals CLXXXI. On the amount of sulphur and phosphorus in various agricultural crops

1845 ◽  
Vol 3 ◽  
pp. 281
Author(s):  
Henry Clifton Sorby
Keyword(s):  
Agricultural Crops

Rational nature management - the basis for increasing the stability of agricultural crops for diseases and pests

2019 ◽  
Vol 325 (5) ◽  
pp. 65-69
Author(s):  
I.A. Trofimov ◽  
◽  
V.M. Kosolapov ◽  
L.S. Trofimova ◽  
E.P. Yakovleva ◽  
...  
Keyword(s):  
Nature Management ◽  
Agricultural Crops ◽  
Rational Nature ◽  
The Stability

SPECIES, HOST RANGE, AND IDENTIFICATION KEY OF WHITEFLIES OF BOGOR AND SURROUNDING AREA

2019 ◽  
Vol 18 (2) ◽  
pp. 127
Author(s):  
Purnama Hidayat ◽  
Denny Bintoro ◽  
Lia Nurulalia ◽  
Muhammad Basri
Keyword(s):  
Host Range ◽  
Host Plants ◽  
Ornamental Plants ◽  
Identification Key ◽  
Agricultural Crops ◽  
Surrounding Area ◽  
Aleurodicus Dispersus ◽  
Agricultural Plants ◽  
Surrounding Areas ◽  
Forest Plants

Species identification, host range, and identification key of whiteflies of Bogor and surrounding area. Whitefly (Hemiptera: Aleyrodidae) is a group of insects that are small, white, soft-bodied, and easily found on various agricultural crops. Whitefly is a phytophagous insect; some species are important pests in agricultural crops that can cause direct damage and can become vectors of viral diseases. The last few years the damage caused by whitefly in Indonesia has increased. Unfortunately, information about their species and host plants in Indonesia, including in Bogor, is still limited. Kalshoven, in his book entitled Pest of Crops in Indonesia, published in the 1980s reported that there were 9 species of whitefly in Indonesia. The information on the book should be reconfirmed. Therefore, this study was conducted to determine whitefly species and its host plants in Bogor and its surroundings. Whiteflies is identified based on the ‘puparia’ (the last instar of the nymph) collected from various agricultural plants, ornamental plants, weeds, and forest plants. A total of 35 species of whiteflies were collected from 74 species and 29 families of plants. The collwcted whiteflies consist of four species belong to Subfamily Aleurodicinae and 31 species of Subfamily Aleyrodinae. The most often found whitefly species were Aleurodicus dispersus, A. dugesii, and Bemisia tabaci. A dichotomous identification key of whiteflies was completed based on morphological character of 35 collected species. The number of whitefly species in Bogor and surrounding areas were far exceeded the number of species reported previously by Kalshoven from all regions in Indonesia.

Muradov RusIMPROVING THE TECHNOLOGY OF DRIP IRRIGATION OF AGRICULTURAL CROPS

2020 ◽  
Vol 1 (2) ◽  
pp. 40-49
Author(s):  
Rustam Muradov ◽  
◽  
Shoxrux Azizov
Keyword(s):  
Drip Irrigation ◽  
Agricultural Crops

Problems and prospects of land reclamation in the non-Chernozem zone of Russia

2020 ◽  
Author(s):  
V.A. Shevchenko ◽  
Keyword(s):  
Agricultural Production ◽  
Land Reclamation ◽  
Agricultural Practice ◽  
Agricultural Crops ◽  
Agricultural Lands ◽  
High Level

The non-black earth zone of Russia is a zone of guaranteed harvest of major agricultural crops. However, at present, the potential of the reclaimed lands of the Non-Black Earth Region remains largely unrealized. In world agricultural practice, land reclamation combined with the use of modern technical means is an important factor in the development of agriculture, a condition for a consistently high level of agricultural production. Therefore, in all countries, reclaimed lands are given a special status, and the necessary amount of reclamation fund of agricultural lands is created.

Roe deerCapreolus capreolususe of agricultural crops during winter in the Lier valley, Norway

1998 ◽  
Vol 4 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Jan Helge Kjøstvedt ◽  
Atle Mysterud ◽  
Eivind Østbye
Keyword(s):  
Agricultural Crops

Intra-sectoral and Intersectoral Parity Issues in Pricing of Agricultural Crops: A Preliminary Analysis

1987 ◽  
Vol 26 (4) ◽  
pp. 401-417
Author(s):  
Sarfraz K. Qureshi
Keyword(s):  
Preliminary Analysis ◽  
Agricultural Sector ◽  
Terms Of Trade ◽  
Agricultural Crops ◽  
Allocation Of Resources ◽  
Price Determination ◽  
Policy Makers ◽  
The Government ◽  
Distribution Of Income ◽  
Over Time

Intersectoral terms of trade play a cruc1al role in determining the sectoral distribution of income and resource allocation in the developing countries. The significance of intra-sectoral terms of trade for the allocation of resources within the agricultural sector is also widely accepted by research scholars and policy-makers. In the context of planned development, the government specifies production targets for the agricultural sector and for different crops. The intervention of government in the field of price determination has important implications for the achievement of planned targets. In Pakistan, there is a feeling among many groups including farmers and politicians with a rural background that prices of agricultural crops have not kept their parities intact over time and that prices generally do not cover the costs of production. The feeling that production incentives for agriculture have been eroded is especially strong for the period since the early 1970s. It is argued that strong inflationary pressures supported by a policy of withdrawal of government subsidies on agricultural inputs have resulted in rapid increases in the prices paid by agriculturists and that increases in the prices received by farmers were not enough to compensate them for the rising prices of agricultural inputs and consumption goods.

ANTHROPOGENIC POLLUTION OF SOIL WITH COPPER AND THE PHYTOREMEDIATION POTENTIAL OF DIFFERENT AGRICULTURAL CROPS

2015 ◽  
Vol 176 (2) ◽  
pp. 163-176
Author(s):  
S. G. Veliksar ◽  
◽  
S. S. Lisnik ◽  
D. N. Bratco ◽  
S. I. Toma ◽  
...  
Keyword(s):  
Anthropogenic Pollution ◽  
Agricultural Crops

Formation of crop rotation as a means of preventing degradation аnd improving soil fertility of the Carpathian region

2018 ◽  
Vol 2 (95) ◽  
pp. 20-25
Author(s):  
O.J. Kachmar ◽  
O.V. Vavrynovych ◽  
O.L. Dubytsky ◽  
A.O. Dubytska ◽  
M.M. Shcherba
Keyword(s):  
Soil Fertility ◽  
Environmental Protection ◽  
Crop Rotation ◽  
Crop Rotations ◽  
Agricultural Crops ◽  
Carpathian Region ◽  
Methodological Approaches ◽  
Rotational Crop

Scientific and methodological approaches to the formation of zonal ecologically safe crop rotations as a basic subsystem of farming in the formation of high, stable productivity of agricultural crops are substantiated, while ensuring the reproduction of soil fertility, increasing the efficiency of fertilizer systems and environmental protection. Various rotational crop rotations for introduction in the conditions of the Carpathian region in farms of different specialization and intensity of production are proposed.

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