Results 111 to 120 of about 7,638 (201)

Interrelationship of nitrogen and photo-period on the flowering, growth, and stem anatomy of certain long day and short day plants [PDF]

open access: yes, 1945
The relation of nitrogen to the flowering and fruitfulness of plants has been subject of extended investigation by many workers. That nitrogen nutrition is intimately related to flower and fruit formation is generally agreed upon, but the various ...
Withrow, Alice Phillips
core   +1 more source

Trimerous pericyclic reactions.

open access: yes, 2020
I occasionally spot an old blog that emerges, if only briefly, as "trending". In this instance, only the second blog I ever wrote here, way back in 2009 as a follow up to this article.
openaire   +1 more source

Root growth and crop yield of two varieties of wheat grown under differing irrigation regimes : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Plant Science at Massey University [PDF]

open access: yes, 1974
Root growth and crop yield of Gamenya, a standard height variety, and Karamu, a semi-dwarf, spring wheat were compared under 3 irrigation regimes: daily watering; infrequent (fortnightly) watering; and sub-irrigation, where water was introduced into the ...
Piggot, Graeme James
core  

A pericyclic dichotomy.

open access: yes, 2012
A dichotomy is a division into two mutually exclusive, opposed, or contradictory groups. Consider the reaction below. The bicyclic pentadiene on the left could in principle open on heating to give the monocyclic [12]-annulene (blue or red) via what is called an electrocyclic reaction as either a six (red) or eight (blue) electron process.
openaire   +1 more source

Sugar apple (Annona squamosa L., Annonaceae) seed germination: morphological and anatomical changes

open access: yesAgronomía Colombiana, 2013
The anon or sugar apple is a species of the Annona genus, widely distributed in the world and in Colombia and a fruit with great potential in domestic and international markets. However, the technical information related to the aspects of propagation and
Fabio Ernesto Martínez-Maldonado   +2 more
doaj  

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