DAIRY HUSBANDRY 



Vitamin D Content of Forage Varies Greatly 16 



Effect of Texture on the Digestibility and Utilization of Concentrates by 



Dairy Cows 16 



Too Much Limestone Lowers Digestibility of Silage 17 



Effect of Sulfur Dioxide-Silage on Vitamin Synthesis by Ruminants 17 



Mow-cured Hay Excells Silage and Field-cured Hay in Digestibility of Pro- 

 tein and Energy 17 



Milk vs. Egg Diluter As an Extender for Bull Semen 18 



Sodium Metabisulfite Appears to Have Possibilities As a Silage Preservative 18 



Minor Element Content of Forage Can Be Reduced by Increasing the Yield 18 



Other Active Projects 19 



ENTOMOLOGY 



Control of Apple Insects 19 



Control of Lice and Mites on Poultry 19 



New Records of Insects in New Hampshire 20 



Other Active Projects 20 



FORESTRY 



Tree Thinning with Chemicals 20 



Other Active Projects ., 21 



HORTICULTURE 



More Flowers for New Hampshire 21 



Hay-Mulch Pays 22 



Culture of the Durham Red Raspberry 22 



Storage Experiments on New Apple Varieties 22 



Aluminum Foil Wrappings Look Good in Preventing Sun Scald oi, Fruit 



Tree Trunks 23 



Potash and Phosphorus Fertilizers Do Not Increase the Amount of Sed in 



the Skin Color of Northern Spy Apples 23 



Increasing the Magnesium Content of Grasses Used for Mulching Apiple Trees 23 



Lettuce Tipburn in Northern New Hampshire 23 



Phosphorus Absorption by Apple Trees 23 



New High-\'itamin Crackproof Tomato Named Doublerich 24 



Three New Red Horticultural Bean Varieties Being Tested 24 



Seed of Superior Green-Pod Snap Bean Being Increased 24 



A Hardy Yellow Peach 24 



Many Interspecific Rubus Hybrids 25 



Late-Ripening Strawberries Distributed to Nurserymen 25 



Korean Chestnuts Distributed to Nurserymen 25 



Other Active Projects 25 



POULTRY HUSBANDRY 



Breeding for Whiter Dominant- White Crosses 26 



Growth Rate of Durhams and Durham Crosses 26 



Selection for Better Feed Utilization Efficiency 27 



Will Improved Broilers Result from Crossing Strains of New Hampshires? 27 



Methionine Fails to Improve Feed Efficiency 27 



3 



